bellows valve manufacturer, bellows valves distributor, bellows valve factory--China Deland Valves Manufactring

Set up in 1995, China Deland Valves Manufactring Co.,Ltd. is one of the leading bellows valve manufacturer, supplier and distributor in Yongjia County of Zhejiang Province. We manufacture all bellows valves strictly conforming to the API, JIS, ANSI, BS, GB, NF and DIN standards. Our bellows valves are available to users on request and are used for municipal works, petroleum, chemical industry, power station, metallurgy, national defense, and scientific research fields. We can supply custom, used, discount, cheap bellows valve and accessory to USA, UK, Canda, Amercia, Europe, Germany, France, Japan, India, Iran, Russia, Poland and more than 30 countries in the world.

Size: NPS 1/2" - 36". Pressure: Class 150 - 1, 500. Material: A) 1/2" - 2": A105, LF2, F11, F22, F5, F304, F316, F304L, and F316L. B) 2" - 36": WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, and CF8M.
Design and manufacture Std.: API 600, BS 1414, and ASME B16. 34. Face to face Std.: API 6D, ASME B16. 10, DIN 3202, BS2080. End connection Std.: ASME B16. 11, ASME B1. 20. 1, ASME B16. 5, ASME B16. 47, and DIN2543 - 255. Test standard: ISO5208, API 600, BS 6755. Structure type: Rising stem and wedge single disc. Operated way: Handwheel, bevel gear, pneumatic, and electric. Full Bore or reduced bore. Outside Screwed and Yoke. Bushing Type. Bolted, fully welded and pressure-in bonnet. Integral Backseat. TTF globe valve has three types of bonnet. One is bolted bonnet, which the body is connected with bonnet by bolts and sealed by spiral gasket with advantages of convenient maintenance; one is welded bonnet, which the body is fully welded with sealing bonnet of no leakage; another is pressure-in bonnet, which the body is screwed into the bonnet and sealed by inner pressure-in ring with better sealing ability for higher pressure.

Used with Hazardous and toxic media, guarantees total tightness and therefore an efficient and economic contribution for the security of surroundings. No loss of product. No maintenance costs. No endangering of man and environment. Stuffing box with gland packing for added safety. Packed valves require two different seals; a 360° seal on the stem and a 360° seal on the stuffing box. The Conval Bellows valves removes these two leak points. Conval Bellows Valves are used when packed valves may not reliably contain light gases or hazardous system fluids. The 6 ply INCONEL® static bellows stem seal is more reliable in many applications than sliding stem seals. Formed bellows are commonly used for packless valve seals in safety, control and high vacuum valves. Hyspan has a complete library of designs for commonly used valves, and the capability to develop new designs. For high temperature and corrosive service speciality alloys such as Monel 400, Alloy 625, and Hastelloy C-276 are available.